Improvement in hub-centering machines and spoke-guides



UNITED S'IaTns PATENT f OFFICE.

KING I). ALLEN, OF HOMER, MICHIGAN.

IMPROVEMENT IN HUB-CENTERING MACHINES AND SPOKE-GUIDES.

Specification forming part of Letters Patent No. 116,790, dated July l1, 1871. i

To all whom t may concern Be it known that I, KINGr I. ALLEN, of Homer, in the county of Calhoun and State of Michigan, have invented a new and useful Improvement in a Combined Hub-Genterin g Machine and Spoke-Guide; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon, and being a part of this specification, in Which- Figure l is a perspective vieW of my device with a hub centered therein.` Fig. 2 is an elevation of the front standard and its clamp. Fig. 3

is a perspective view of the expanding mandrelv and its Washer, and Fig. 4 is the same With its attachments.

Like letters indicate like parts in each ligure.

The nature of this invention relates to the construction of machine for receiving, holding, and centering Wheel-hubs of any size, and which will furnish a guide for driving the spokes, giving them the required dish and length to shoulder and end. The invention consists in the novel and peculiar construction of a pair of standards-one of Which may be a leg of the Worlrnians benchprovided with clamps for holding the hub, one of said standards having a movement in its base to adjust it for the reception of hubs of varying lengt-h in the peculiar construction and arrangement of a self-centering expanding mandrel and, in connection therewith, a guide for driving the spokes by, giving them the required dish and length, the whole operating as hereinafter more -fully set forth.

In the drawing, A represents a base or sill, from the rear end of which rises a standard, B, which may be secured to the leg otl the Workbench by a bolt, a. -Another standard, B', has a longitudinal movement fin a dovetail-slot in the base A, to adjust it to the length of the hub, the tops of both standards being hollowed, to receive it. C are circular clamps hinged to the tops of the standards, each having threaded through its top a Vclampscrew, I), carryin or having sWiveled to its point a segmental plate, c, which bears on the upper part of the hub-band and secures it to the standard. By referring to the draWin the manner of securing the hub D will be fully understood. E represents spokes driven in the sockets mortised in the hub. F is a mandrel, on one part of which is cut a thread, el, for about one-third of its length. In this part is cut a longitudinal slot, e, with which engages a stud on the Washerf. A hand-nut, g, is threaded on the screw outside of the washer. The central portion of the mandrel is squared, as shonui at lz., and the remainder is in the form of a rectangular truncated pyramid joined thereto by its apex forming the expanded head i. Gis a plate having an externally-roimded hub, j, sliding on the squared part ofthe mandrel. On the inner face are studs or points Which force into the end of the hub to prevent the plate from turning. H is a flanged cup or sleeve slipped over the hub 7' of the plate G, between it and the Washer f, and is provided With a socket for the reception ofthe ordinate rod I. J is a disk sliding on the squared part of the mandrel, and having hinged to its inner face the expanding leaves or segments, k, Which rest upon the faces of the head L is a movable arm on the ordinate rod I, adjustable thereon to any desired distance from spokes as they are driven, and the other sharp.

end to scribethem for total length, and length to shoulder in the rotation ofthe wheel.

To operate my improvement, remove the ordinate rod from its socket; then, with the hand nut run back, as also the other parts attached to thel mandrel, the leaves or segments may be inserted into the bore of the hub, entering at the small end; then, sliding up the plate G and the other parts against the hub and screwin g up the hand-nut, the mandrel will be drawn back and the inclined planes forming its head will press out the segments or lea-ves against the Walls of its bore, which will bring the center of the mandrel concentric therewith, leaving the sleeve H free to turn on the hub of the plate G, Whose studs, enga-gin With the end of the hub, hold it fast thereto. By throwing forward the clamp of the standard B the hub may be nowinserted between the cla-mp and top of the standard B, resting on the front one, when it is loosely secured by bringing up the other clamp and screwing dov'n the clamping-plates to a bearing on the hub. The ordinate rod is now inserted in its socket and its arm carried up to about the ends of the spokes, with the blunt end ofthe guide extended far enough to give eaeh spoke the desired piteh. The spokes are now driven home, steadying eaeh against the guide, the hub turning in its bearings as eueh is to be driven. After the spokes are driven the guide is reversed and its sharp point brought to the required distance from the eoinlnon center t0 gauge the length of spoke and depth of tenon by rotating the Wheel in Contact therewith.

What I claim as my invention, and desire to secure by Letter Patent, is-

l. The construction and arrangement of the standardsB B on the base A, clamps C, ClampsereWs b, and clamp-plates o, substantially as described, for the purpose speeied.

2. The mandrel F, constructed asherein described, and provided With the disk J carrying the leaves lo, the flanged sleeve H, plate G, Wesherf, nut g, ordinate rod I, arm L, and guide Z, substantially as and for the purposes set forth.

Vitnesses: KING P. ALLEN.

FREDERICK EEEETS, M. STEWART. 

